Y Combinator fundamentally changed the investing game circa 2007 with its approach of taking shots in the dark on a wide array of companies. That strategy finally paid off earlier this year when Dropbox went public, a “dream come true” for the firm. But now there are dozens of accelerators and an at-times ridiculous amount of seed capital available — so it comes down to what Y Combinator can offer its founders and where it thinks the whole idea of an “accelerator” is going.